NSTS Bancorp, Inc. Annual report pursuant to Section 13 and 15(d)

Note 4 - Allowance for Loan Losses - Aging of Bank's Loan Portfolio (Details)

Note 4 - Allowance for Loan Losses - Aging of Bank's Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loans	$ 96,501	$ 98,659
Non-accrual	102	280
First Mortgage Loans [Member]
Loans	96,129	98,274
First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	88,028	87,198
Non-accrual	102	280
First Mortgage Loans [Member] \| Multifamily [Member]
Loans	3,497	5,736
Non-accrual	0	0
First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	4,604	5,340
Non-accrual	0	0
Consumer Portfolio Segment [Member]
Loans	372	385
Non-accrual	0	0
Financial Asset, 31 to 89 Days Past Due [Member]
Loans	0	99
Financial Asset, 31 to 89 Days Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	0	0
Financial Asset, 31 to 89 Days Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	0	0
Financial Asset, 31 to 89 Days Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	0	0
Financial Asset, 31 to 89 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	0	99
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	41	75
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	41	75
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	0	0
Financial Asset, Past Due [Member]
Loans	143	454
Financial Asset, Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	143	355
Financial Asset, Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	0	0
Financial Asset, Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	0	0
Financial Asset, Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	0	99
Financial Asset, Not Past Due [Member]
Loans	96,358	98,205
Financial Asset, Not Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	87,885	86,843
Financial Asset, Not Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	3,497	5,736
Financial Asset, Not Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	4,604	5,340
Financial Asset, Not Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	$ 372	$ 286